OK, a popular online travel agency (ehmm, no ad here) lists E75 for BHX-DUS 13:25 (BE7045) and 17:40 departures (BE7047). On Friday also the 6:50, BE7041. Saturdays this one is at 8:45 and still a Q400. I've checked early Nov. The 10:00 from DUS-BHX on a Monday also still a Q400, as is the Monday 7:00 from DUS (BE7040). Hm, a little confusing then.